Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 225
Fig. 66. Time Limit Overload Relays with Covers RemovedCourtesy of General Electric Company 199 102 SWITCHBOARDS relay is used to protect transformers against trouble in themselves.There are two opposing current coils connected to current transform-ers on both the low and high tension side of the… … Fig. 07. High Potential Series Relay, Mounted on Post InsulatorsCourtesy of General Electric Company ment of the plunger under normal conditions. If a short fircuitshould occur in the transformer and power should be fed from bothhigh and low tension sides, then the two coils would act together,and…
Electrical engineering
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